Some progress on thread terminations

src-tauri/src/downloads/download_agent.rs

@@ -10,7 +10,7 @@ use serde::{Deserialize, Serialize};
 use urlencoding::encode;
 use std::fs::{create_dir_all, File};
 use std::path::Path;
-use std::sync::atomic::AtomicUsize;
+use std::sync::atomic::{AtomicBool, AtomicUsize};
 use std::sync::{Arc, Mutex};
 
 pub struct GameDownloadAgent {
@@ -20,6 +20,7 @@ pub struct GameDownloadAgent {
     contexts: Mutex<Vec<DropDownloadContext>>,
     progress: ProgressChecker<DropDownloadContext>,
     pub manifest: Mutex<Option<DropManifest>>,
+    pub callback: Arc<AtomicBool>
 }
 #[derive(Serialize, Deserialize, Clone, Eq, PartialEq)]
 pub enum GameDownloadState {
@@ -47,14 +48,17 @@ pub enum SystemError {
 
 impl GameDownloadAgent {
     pub fn new(id: String, version: String) -> Self {
+        let callback = Arc::new(AtomicBool::new(false));
         Self {
             id,
             version,
             state: Mutex::from(GameDownloadState::Uninitialised),
             manifest: Mutex::new(None),
+            callback: callback.clone(),
             progress: ProgressChecker::new(
                 Box::new(download_logic::download_game_chunk),
                 Arc::new(AtomicUsize::new(0)),
+                callback
             ),
             contexts: Mutex::new(Vec::new()),
         }

src-tauri/src/downloads/download_logic.rs

@@ -5,18 +5,20 @@ use crate::DB;
 use gxhash::{gxhash128, GxHasher};
 use log::info;
 use md5::{Context, Digest};
-use std::{fs::{File, OpenOptions}, hash::Hasher, io::{self, Seek, SeekFrom, Write}, path::PathBuf};
+use std::{fs::{File, OpenOptions}, hash::Hasher, io::{self, Seek, SeekFrom, Write}, path::PathBuf, sync::{atomic::{AtomicBool, Ordering}, Arc}};
 use urlencoding::encode;
 
-pub struct FileWriter {
+pub struct DropFileWriter {
     file: File,
     hasher: Context,
+    callback: Arc<AtomicBool>
 }
-impl FileWriter {
-    fn new(path: PathBuf) -> Self {
+impl DropFileWriter {
+    fn new(path: PathBuf, callback: Arc<AtomicBool>) -> Self {
         Self {
             file: OpenOptions::new().write(true).open(path).unwrap(),
             hasher: Context::new(),
+            callback
         }
     }
     fn finish(mut self) -> io::Result<Digest> {
@@ -24,8 +26,11 @@ impl FileWriter {
         Ok(self.hasher.compute())
     }
 }
-impl Write for FileWriter {
+impl Write for DropFileWriter {
     fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
+        if self.callback.load(Ordering::Acquire) {
+            
+        }
         self.hasher.write_all(buf).unwrap();
         self.file.write(buf)
     }
@@ -35,12 +40,15 @@ impl Write for FileWriter {
         self.file.flush()
     }
 }
-impl Seek for FileWriter {
+impl Seek for DropFileWriter {
     fn seek(&mut self, pos: SeekFrom) -> std::io::Result<u64> {
         self.file.seek(pos)
     }
 }
-pub fn download_game_chunk(ctx: DropDownloadContext) {
+pub fn download_game_chunk(ctx: DropDownloadContext, callback: Arc<AtomicBool>) {
+    if callback.load(Ordering::Acquire) {
+        return;
+    }
     let base_url = DB.fetch_base_url();
 
     let client = reqwest::blocking::Client::new();
@@ -63,7 +71,7 @@ pub fn download_game_chunk(ctx: DropDownloadContext) {
         .send()
         .unwrap();
 
-    let mut file: FileWriter = FileWriter::new(ctx.path);
+    let mut file: DropFileWriter = DropFileWriter::new(ctx.path);
 
     if ctx.offset != 0 {
         file

src-tauri/src/downloads/progress.rs

@@ -1,7 +1,7 @@
 use rayon::ThreadPoolBuilder;
 use uuid::timestamp::context;
 use std::os::unix::thread;
-use std::sync::atomic::{AtomicUsize, Ordering};
+use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
 use std::sync::Arc;
 
 pub struct ProgressChecker<T>
@@ -9,7 +9,8 @@ where
     T: 'static + Send + Sync,
 {
     counter: Arc<AtomicUsize>,
-    f: Arc<Box<dyn Fn(T) + Send + Sync + 'static>>,
+    f: Arc<Box<dyn Fn(T, Arc<AtomicBool>) + Send + Sync + 'static>>,
+    callback: Arc<AtomicBool>
 }
 
 impl<T> ProgressChecker<T>
@@ -17,24 +18,26 @@ where
     T: Send + Sync,
 {
     pub fn new(
-        f: Box<dyn Fn(T) + Send + Sync + 'static>,
+        f: Box<dyn Fn(T, Arc<AtomicBool>) + Send + Sync + 'static>,
         counter_reference: Arc<AtomicUsize>,
+        callback: Arc<AtomicBool>
     ) -> Self {
         Self {
             f: f.into(),
             counter: counter_reference,
+            callback
         }
     }
     pub async fn run_contexts_sequentially_async(&self, contexts: Vec<T>) {
         for context in contexts {
-            (self.f)(context);
-            self.counter.fetch_add(1, Ordering::Relaxed);
+            (self.f)(context, self.callback.clone());
+            self.counter.fetch_add(1, Ordering::Release);
         }
     }
     pub fn run_contexts_sequentially(&self, contexts: Vec<T>) {
         for context in contexts {
-            (self.f)(context);
-            self.counter.fetch_add(1, Ordering::Relaxed);
+            (self.f)(context, self.callback.clone());
+            self.counter.fetch_add(1, Ordering::Release);
         }
     }
     pub fn run_contexts_parallel_background(&self, contexts: Vec<T>, max_threads: usize) {
@@ -46,8 +49,9 @@ where
             .unwrap();
 
         for context in contexts {
+            let callback = self.callback.clone();
             let f = self.f.clone();
-            threads.spawn(move || f(context));
+            threads.spawn(move || f(context, callback));
         }
     }
     pub async fn run_context_parallel(&self, contexts: Vec<T>, max_threads: usize) {
@@ -58,8 +62,9 @@ where
 
         threads.scope(|s| {
             for context in contexts {
+                let callback = self.callback.clone();
                 let f = self.f.clone();
-                s.spawn(move |_| f(context));    
+                s.spawn(move |_| f(context, callback));
             }
         });
         

src-tauri/src/tests/progress_tests.rs

@@ -1,18 +1,20 @@
 use std::sync::Arc;
-use std::sync::atomic::AtomicUsize;
+use std::sync::atomic::{AtomicBool, AtomicUsize};
 use crate::downloads::progress::ProgressChecker;
 
 #[test]
 fn test_progress_sequentially() {
     let counter = Arc::new(AtomicUsize::new(0));
-    let p = ProgressChecker::new(Box::new(test_fn), counter.clone());
+    let callback = Arc::new(AtomicBool::new(false));
+    let p = ProgressChecker::new(Box::new(test_fn), counter.clone(), callback);
     p.run_contexts_sequentially((1..100).collect());
     println!("Progress: {}", p.get_progress_percentage(100));
 }
 #[test]
 fn test_progress_parallel() {
     let counter = Arc::new(AtomicUsize::new(0));
-    let p = ProgressChecker::new(Box::new(test_fn), counter.clone());
+    let callback = Arc::new(AtomicBool::new(false));
+    let p = ProgressChecker::new(Box::new(test_fn), counter.clone(), callback);
     p.run_contexts_parallel_background((1..100).collect(), 10);
 }